Why Onex
Why Onex
Entrepreneurial by culture and collaborative by nature. Independent thinkers and team players. We use all the tools in our toolkit to drive positive outcomes for stakeholders.
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Convex
Convex
Convex is a specialty insurer and reinsurer focused on underwriting complex specialty risks across a diverse range of business lines.
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Credit
Credit
Complete, bespoke capital solutions with a partnership approach and a focus on downside protection with upside participation.
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Private Equity
Private Equity
Growing great businesses and building strong relationships to the long-term benefit of our investors and partners.
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Wealth Strategies
Wealth Strategies
Onex Private Wealth strategies harness Onex’ 41-year investment track record to help individuals and families grow their wealth and accomplish their investment goals.
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Shareholders
Shareholders
Building shareholder value with a focus on compounding investing capital and driving growth in our asset management business.
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Sustainability
Sustainability
We seek to invest wisely while having a positive impact on our community and broader environment.
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New York
2026
Madeleine focuses on the company's fundraising and investor relations efforts across the Onex platforms.
Prior to joining Onex, she held summer roles at Estée Lauder Companies Inc. and Meitu Inc.
Madeleine earned a B.A. in International Relations and Philosophy from New York University, with a minor in Business of Entertainment, Media, and Technology.